Add AVFHostTestCases to postsubmit and fix boot time is not as expected issue.

1. abtd run post submit and confirm result is PASS. http://sponge2/0ef87667-7f24-4ca7-a3fa-eb31bbc0bf23
2. dalvik.vm.systemservercompilerfilter=speed will cause boot time is not as expected so remove it in this CL. Trace in b/243926823

Bug: 243197801
Test: atest AVFHostTestCases
Change-Id: Ie8cd9e5f6868f1cb3e297807ae651da08282b795
diff --git a/TEST_MAPPING b/TEST_MAPPING
index ea81bc4..11648c4 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -28,6 +28,9 @@
     },
     {
       "name": "ComposBenchmarkApp"
+    },
+    {
+      "name": "AVFHostTestCases"
     }
   ],
   "imports": [